# git rev-parse -q --verify e00d8880481497474792d28c14479a9fb6752046^{commit} e00d8880481497474792d28c14479a9fb6752046 already have revision, skipping fetch # git checkout -q -f -B kisskb e00d8880481497474792d28c14479a9fb6752046 # git clean -qxdf # < git log -1 # commit e00d8880481497474792d28c14479a9fb6752046 # Author: Masahiro Yamada # Date: Tue Jan 15 16:19:00 2019 +0900 # # kbuild: mark prepare0 as PHONY to fix external module build # # Commit c3ff2a5193fa ("powerpc/32: add stack protector support") # caused kernel panic on PowerPC when an external module is used with # CONFIG_STACKPROTECTOR because the 'prepare' target was not executed # for the external module build. # # Commit e07db28eea38 ("kbuild: fix single target build for external # module") turned it into a build error because the 'prepare' target is # now executed but the 'prepare0' target is missing for the external # module build. # # External module on arm/arm64 with CONFIG_STACKPROTECTOR_PER_TASK is # also broken in the same way. # # Move 'PHONY += prepare0' to the common place. GNU Make is fine with # missing rule for phony targets. I also removed the comment which is # wrong irrespective of this commit. # # I minimize the change so it can be easily backported to 4.20.x # # To fix v4.20, please backport e07db28eea38 ("kbuild: fix single target # build for external module"), and then this commit. # # Link: https://bugzilla.kernel.org/show_bug.cgi?id=201891 # Fixes: e07db28eea38 ("kbuild: fix single target build for external module") # Fixes: c3ff2a5193fa ("powerpc/32: add stack protector support") # Fixes: 189af4657186 ("ARM: smp: add support for per-task stack canaries") # Fixes: 0a1213fa7432 ("arm64: enable per-task stack canaries") # Cc: linux-stable # v4.20 # Reported-by: Samuel Holland # Reported-by: Alexey Kardashevskiy # Signed-off-by: Masahiro Yamada # Acked-by: Ard Biesheuvel # Tested-by: Alexey Kardashevskiy # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 e00d8880481497474792d28c14479a9fb6752046 # < make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_mpc85xx_smp_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mpc85xx_smp_defconfig # make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_mpc85xx_smp_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1263:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/trace/trace_dynevent.c: In function 'create_dyn_event': /kisskb/src/kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': /kisskb/src/sound/soc/codecs/wm8960.c:803:70: warning: 'j' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c:800:68: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1434:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery': /kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here /kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:334.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:334.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc32ff4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc227f4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:06 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5906012 Bytes = 5767.59 KiB = 5.63 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936834 Bytes = 5797.69 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5939091 Bytes = 5799.89 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5939161 Bytes = 5799.96 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936991 Bytes = 5797.84 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936887 Bytes = 5797.74 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5938394 Bytes = 5799.21 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936811 Bytes = 5797.67 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936835 Bytes = 5797.69 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5937118 Bytes = 5797.97 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5937212 Bytes = 5798.06 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5938696 Bytes = 5799.51 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936992 Bytes = 5797.84 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5937010 Bytes = 5797.86 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936890 Bytes = 5797.74 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.0.0-rc2-ge00d88804814 Created: Fri Jan 18 02:37:07 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5936834 Bytes = 5797.69 KiB = 5.66 MiB Load Address: 00d00000 Entry Point: 00d002a8 Completed OK # rm -rf /kisskb/build/kbuild_mpc85xx_smp_defconfig_powerpc-gcc4.6 # Build took: 0:01:47.599091